Audio Basics Newsletter Dynaco Stereo 120

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perkster

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Audio Basics Newsletter Dynaco Stereo 120
« on: 28 Jan 2018, 08:24 am »
Hello All

Which newsletter edition spoke about the Dynaco Stereo 120 rebuilt/upgrade?

Thanks  Mike

10ear

Re: Audio Basics Newsletter Dynaco Stereo 120
« Reply #1 on: 28 Jan 2018, 03:00 pm »
There is a listing of all articles on AVA website.  Look under Resources.........

dB Cooper

Re: Audio Basics Newsletter Dynaco Stereo 120
« Reply #2 on: 28 Jan 2018, 03:05 pm »
They still do this rebuild. Give them a call. Audio Basics stopped years ago so any info there would be largely out of date (new circuit version, pricing etc).

perkster

  • Jr. Member
  • Posts: 16
Re: Audio Basics Newsletter Dynaco Stereo 120
« Reply #3 on: 28 Jan 2018, 06:16 pm »
Hello

Under resources I do see a list of all the newsletters by year and month but I don't see a list of the actual articles? Unless I'm missing something please help.

Mike

charmerci

Re: Audio Basics Newsletter Dynaco Stereo 120
« Reply #4 on: 28 Jan 2018, 08:43 pm »
I would go backwards through them. Somewhere late-ish is an index, it'll save some time. It won't take too long to scan through them all. Newsletters aren't that long.

dB Cooper

Re: Audio Basics Newsletter Dynaco Stereo 120
« Reply #5 on: 28 Jan 2018, 08:57 pm »
Download them all, there's a lot of good info in there, even if some of the discussions of specific (obsolete) equipment aren't that helpful. Any decent pdf reader should let you search. But the current ST-120 circuit set came out long after the last issue.

perkster

  • Jr. Member
  • Posts: 16
Re: Audio Basics Newsletter Dynaco Stereo 120
« Reply #6 on: 28 Jan 2018, 10:37 pm »
 thanks db for the info.  I just want to keep the dynaco stereo 120 original and thought that maybe this article had ways of keeping it stock.9

dB Cooper

Re: Audio Basics Newsletter Dynaco Stereo 120
« Reply #7 on: 29 Jan 2018, 01:51 am »
Aha, that is a different kettle of fish, you may still want to replace the 120's notoriously problematic power supply though.

rlee8394

Re: Audio Basics Newsletter Dynaco Stereo 120
« Reply #8 on: 29 Jan 2018, 02:18 am »
It's in the 1984 Audio Basics link.

perkster

  • Jr. Member
  • Posts: 16
Re: Audio Basics Newsletter Dynaco Stereo 120
« Reply #9 on: 29 Jan 2018, 02:40 am »
It's in the 1984 Audio Basics link.

Thanks.

dB Cooper

Re: Audio Basics Newsletter Dynaco Stereo 120
« Reply #10 on: 29 Jan 2018, 10:27 am »
Here's another option that might be useful, especially if you want to do some DIY repairs or improvements.

avahifi

Re: Audio Basics Newsletter Dynaco Stereo 120
« Reply #11 on: 29 Jan 2018, 09:18 pm »
Anyone interested in our very simple and effective original ST-120 power supply upgrade, just send me your email address to:  frank@avahifi.com and I will send you the complete .pdf file which contains the schematic, original power supply board simple modifications, and original schematics too.

We still have a good supply of the necessary Hitachi 2SK135 power transistor but the Exicon 10N20 TO3 case mosfet will work too although the gate resistor should then be 475 ohms.

Note that our complete Dyna 120 rebuild, our Insight+170 gives you a whole new modern amplifier in your case, everything new including the power transformer for $899.

Frank

rlee8394

Re: Audio Basics Newsletter Dynaco Stereo 120
« Reply #12 on: 30 Jan 2018, 12:09 am »
I can vouch for the Insight+ 170. Frank built one for me (hence has gone to my nephew) and it is amazing! Turn it on and put your ear next to your speaker and it is dead quiet! Incredibly detailed and dynamic. If you love that ST-120 chassis, go for the rebuild. Else the Synergy 200 is very attractive for an extra C-note!